配置MySQL服務的自啟動

[root@Oracle9i mysql]# cp support-files/mysql.server /etc/init.d/mysql
[root@oracle9i mysql]# chmod +x /etc/init.d/mysql
[root@oracle9i etc]# chkconfig --list mysql
service mysql supports chkconfig, but is not referenced in any runlevel (run 'chkconfig --add mysql')
[root@oracle9i etc]# chkconfig --add mysql 345 on
chkconfig version 1.3.13.5.EL4 - Copyright (C) 1997-2000 Red Hat, Inc.
This may be freely redistributed under the terms of the GNU Public License.

usage:   chkconfig --list [name]
         chkconfig --add <name>
         chkconfig --del <name>
         chkconfig [--level <levels>] <name> <on|off|reset>
[root@oracle9i etc]# chkconfig --add mysql
[root@oracle9i etc]# chkconfig --list mysql
mysql           0:off   1:off   2:on    3:on    4:on    5:on    6:off

重啟機器，測試：
[root@oracle9i mysql]# reboot

Broadcast message from root (pts/1) (Wed Mar  2 15:44:42 2011):

The system is going down for reboot NOW!

重啟後，發現mysql資料庫已經自動啟動起來
[root@oracle9i ~]# ps -ef | grep mysql
root      5508     1  0 15:46 ?        00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/oracle9i.pid
mysql     5761  5508  0 15:46 ?        00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/usr/local/mysql/data/oracle9i.err --pid-file=/usr/local/mysql/data/oracle9i.pid --socket=/tmp/mysql.sock --port=3306
root      6749  6716  0 15:47 pts/0    00:00:00 grep mysql
[root@oracle9i ~]# mysql -e "select host from db" mysql
+------+
| host |
+------+
| %    |
| %    |
+------+
[root@oracle9i ~]# mysql -e "show database" mysql
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
[root@oracle9i ~]# mysql -e "select host,db,user from db" mysql
+------+---------+------+
| host | db      | user |
+------+---------+------+
| %    | test    |      |
| %    | test\_% |      |
+------+---------+------+